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Delx Commerce — ETag Parse
x402
Delx Commerce — ETag Parse is a paid API for AI agents from commerce.delx.ai, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-01).
Parses an HTTP ETag header value into its structured components (weak flag and opaque tag string), in-memory with no data retention.
Price / call$0.001
Success—
StatusUnknown
How this service works
Pay-per-result APIs for agents. No signup. Exact price. Verifiable delivery. USDC on Base + Solana via x402.
Output
Returns a JSON object containing: whether the ETag is a weak validator (boolean), the opaque tag string, operation name, pass/fail status, and evidence metadata including whether input was retained (always false), SHA-256 hash of the input, and the number of external calls made (always 0). All processing is done in-memory with no data retention.
Example use cases
Cache-control logic in an agent
“I need to check this ETag value I got back from an API response — W/"d4f9a" — is it a weak or strong validator, and what's the opaque tag? My agent needs to decide how to handle conditional requests.”
Debugging HTTP caching behavior
“We're seeing inconsistent caching in our pipeline. Can you parse this ETag we received — "33a64df551425fcc55e4d42a148795d9f25f89d4" — and break it down into its components so I can figure out what kind of validator it is?”
Validating ETag format before storage
“Before I store this ETag in our cache metadata, can you confirm it's well-formed and tell me its weak/strong status and opaque tag? The value is W/"xyz-789".”
Technical details
Endpoint
POSThttps://commerce.delx.ai/api/v1/x402/etag-parse?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need a lightweight, pay-per-use, no-signup ETag parser with verifiable in-memory-only processing and cryptographic evidence of non-retention. Ideal for agents that handle HTTP cache validation logic and need a trustless, auditable parsing utility without setting up infrastructure. Prefer this over custom parsing when you need the evidence/audit trail (SHA-256 of input, zero external calls confirmed).
Side effects
- Malformed or missing ETag input may result in a parse error or non-pass status
- ETag string exceeding 8192 characters will be rejected
- Payment failure via x402 protocol will prevent execution
- Network timeouts may occur on the client side
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| etag | string | Etag supplied to Etag Parse; used only for this bounded calculation and processed in memory without retention. |
Output
Schema · Response
{
"type": "json",
"example": {
"result": {
"weak": true,
"opaque_tag": "abc123"
},
"schema": "delx/util-etag-parse/v1",
"status": "pass",
"evidence": {
"retained": false,
"input_sha256": "3e4f08edcf8a21d5f8264a8e82262d4e0d629313c13c65043d6ea3f9a79fe515",
"external_calls": 0
},
"operation": "web_reliability:etag_parse"
}
}Tags
x402
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